Celestial Infrared Calibration Sources in the 8-14 Micrometer Region: Venus and Jupiter

Abstract

Venus and Jupiter are often used as long wavelength infrared (LWIR) calibration sources. The authors have reviewed the literature on radiometric and spectrometric measurements of these two planets and adopted reasonable brightness temperatures and spectral dependencies for their thermal radiation. Using these data, irradiance coefficients that can be used to determine the irradiance reaching the earth from these planets at any time were calculated. A crucial factor in the utility of these planets as calibration sources is the constancy with which they radiate in the infrared. The authors conclude that Jupiter may be a variable source. Venus, on the other hand, appears to be generally quite constant, but brief temporal variations may take place.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 05, 1973
Accession Number
AD0772660

Entities

People

  • Graham R. Hunt
  • John W. Salisbury
  • Lloyd M. Logan
  • Thomas E. Cecil

Organizations

  • Air Force Cambridge Research Laboratories

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Atmospheres
  • Brightness
  • Calibration
  • Coefficients
  • Detectors
  • Emission Spectra
  • Errors
  • Ground Based
  • High Resolution
  • Infrared Radiation
  • Infrared Spectra
  • Measurement
  • Observation
  • Radiation
  • Spectra

Readers

  • Astronomy and Astrophysics.
  • Atmospheric Remote Sensing.
  • Systems Analysis and Design